(2z-9)(2-z)=0

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Solution for (2z-9)(2-z)=0 equation:


Simplifying
(2z + -9)(2 + -1z) = 0

Reorder the terms:
(-9 + 2z)(2 + -1z) = 0

Multiply (-9 + 2z) * (2 + -1z)
(-9(2 + -1z) + 2z * (2 + -1z)) = 0
((2 * -9 + -1z * -9) + 2z * (2 + -1z)) = 0
((-18 + 9z) + 2z * (2 + -1z)) = 0
(-18 + 9z + (2 * 2z + -1z * 2z)) = 0
(-18 + 9z + (4z + -2z2)) = 0

Combine like terms: 9z + 4z = 13z
(-18 + 13z + -2z2) = 0

Solving
-18 + 13z + -2z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-9 + 2z)(2 + -1z) = 0

Subproblem 1

Set the factor '(-9 + 2z)' equal to zero and attempt to solve: Simplifying -9 + 2z = 0 Solving -9 + 2z = 0 Move all terms containing z to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 2z = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 2z = 0 + 9 2z = 0 + 9 Combine like terms: 0 + 9 = 9 2z = 9 Divide each side by '2'. z = 4.5 Simplifying z = 4.5

Subproblem 2

Set the factor '(2 + -1z)' equal to zero and attempt to solve: Simplifying 2 + -1z = 0 Solving 2 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1z = 0 + -2 -1z = 0 + -2 Combine like terms: 0 + -2 = -2 -1z = -2 Divide each side by '-1'. z = 2 Simplifying z = 2

Solution

z = {4.5, 2}

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